Apple is now offering free next-day shipping on many online orders in the United States. According to Apple’s holiday shipping page, non-engraved iPads and iPods, the iPhone 4, iPhone 3GS, non-customized and popular iMac configurations, and the Apple TV can all be ordered today for arrival by December 24, thanks to the free next day shipping offer. For all other products, customers are advised to check their cart for expected delivery dates.